This serum is a new and purportedly improved version of the original Advanced Night Repair. It has a thicker, more velvety texture than the original due to its silicone content, and is said to be formulated with 5 times the concentration of the patented recovery complex found in the original formula. The serum is to be used for 21 consecutive nights, every 3-4 months. I find that the original and the concentrate work equally well to calm and soothe the skin. I am not sure if I’ll continue using the concentrated version because I get similar results from the original formula at half the price.
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